Detachable joint means for rigidly connecting an implement to a tractor



Said implement by Said tractor, cpmprising a b ac t having a baSe plate and provided With a fen1ale member, Said female member being forined by a prtion of said baSe plate, a pair of vertical paraul Tidge with* op osed inclined Sides relative to each other and a bridging ]]lember integral with and extending acfoss Said ridges at a distance from Said base plate, Said bridging IneInber being provided with a air of Spaced' lateral openings contiguous with the internal top face 0f said bridging Inember, the axes of said openings being essentially parallel with Said internal top face and extending in the ditection of said bridging nlember across Said Tidges, means for Securing Said bracket to said tractor, a male member Secured t0 Said il111)lenent for insertion into Said Inae member, Said male member being of complementary shape yith said fen1ale n1ember for full contact with said opp0sed inclined sideS but* of lesser dimension in the direction of said distance, and a vvedge meInber for in- Sertion into Said lateral openings t0 hold Said Inale and female members in xed p0sition against Telative angular IveInent, Said wedge Inenber extending tranSveSely of said male member and being Supported by Said bridging member t0 revent defornlation of said wedge Inember aS a resu]t of the moment around the vertical axis of the Inale Inember produced by the forces on Said in]plen1ent during pushing there0f' 2 A Teadily disengageable coupling for connecting an agricultural implenlent to the front of a tractor to push said implement by Said tractor, colnprising a bracket having a base plate and pr0vided With a fenale TnenlbeT, Said fe111ale Inember being formed by a portion of Said base plate, a pair of pafallel l`idges with opposed inclined Sides relative to each other and a bridging rlember integral with and extending across Said Tidges at a distance from said base plate, Said bridging nlember being pr0 vided with a pair of Spaced lateral openings contiguous vvith the internal (Op face Of said bridging n1ernber, the axes of said openjngs being essentially in alignment with each 0ther and paralle1 With Said internal top face and extending in the direction of said bridging n]ember across Said ridges, means for securing Said bracket to Said tractor, a male member Secured to Said implement for insertion into said female mcn1ber, said ITlale member being of complementary Shape with said female member for full contact with Said 0posed inclined sides but of lesser dimension in the direction of Said distance and provided with a transverse groove extending beneath Said bridging men1ber essentially paralle1 to Said aligned axes with said n1ale member inserted in its assembled' position in Said fen]ale nlember, and a vvedge n1en1ber for insertion into Said lateral openings to engage Said gr00ve and to hold Said Inale and fexnale members* in fixed position against relative angular and vertical axial movements, Said vedge Inember extending transversely of Said nTale Inember and being Supported by Said bridging Inenber to prevent deformation of said Wedge member as a result of the m0ment around the vertical axis of the rnale member produced by the forces on Said inplenent during pushing there0f 3. A Teadily disengageable coupling having a bracket member for connection vvith a tract01 and a 1Tale n1ember for connection with an agricultural implement to be pushed by said tracto in front thereof, Said bracket member having a base plate, a pair of vertical parauel ridges Vith opposed inclined Sides relative to each other and a bridging member integral With and extending acr0Ss Said Tidges at a distance fr()In said base I)late, a portion f s ai i ba plate, Said idges and said bridging member forming a female member for receiving Said male member, Said bridging member being provided with a pair of spaced lateTal openings c0ntiguous With the intetnal top face of Said bridging member, the axes of Said openings being essentially aligned and parallel to Said internal top face and extending in the direction of said bridging membe across Said ridges, said male member being of' complementary Shape with Said female member fof full contact With said opp0sed inclined sides but of lesser dimension in the directi0n of Said distance, and a Wedge Tnember for insertion int0 Said lateral openings t0 hold said l ale and female members in Jed OSition against relative angular movement about an axis paralle1 to Said ridges, Said Wedge Inenber extending transversely of Said male member and being supported by Said bfidging member to pevent deformation of said Wedge nleInber as a result of the Inoment around the vertica1 axis of the male member produced by forces on Said implement during pushing thereof' 4. A readily disengageable coupling having a bracket member for c0nnection With a tract01 and a male member for connection with an agricultural implement to be pushed by Said tract0r in front thereof, Said bracket member having a base plate, a pair 0f vertical arane Tidges Vith opposed inclined Sides relative to each other and a bridging member integral with and extending across Said ridges= at a distance from Said base plate, a portion of said base plate, Said ridges and Said bridging member forming a female member for receiving Said male member, said bridging nlember being provided vvith a air of Spaced lateral openings contiguous with the internal top face 0f Said bridging member, the axes of said openings being essentially aligned and parallel to Said internal top face and extending in the direction of said bridging member across said ridges, Said male member being 0f con1plementary Shape vvith Said female member for full contact vvith said opposed inclined Sides but of lesser dimension in the direction ()f said distance and provided with a transverse groove extending essentially paranel t0 said aligned axes with said male member inserted in itS assembled position in said female member, and a wedge nlember for insertion int0 said lateral openings t0 hold Said male and female menbers in Hxed )0Siti0n against Telative angular moveInent about an aXis parallel to said ridges, Said Wedge Inember extending transvetsely of Said male member and being Supported by Said bridging member 'o prevent defor[nation of said v/edge Inember as a result of the In0lnent around the vertical axis of the n1ale member produced by forces on Said implement dur ing ushing thereof lefereceS (;ie(l in the le of this patent UNITED STATES PATENTS 323,70 Maunder Aug. 4 188S 367 11S Pahner July 26, 1887 79Z,06 Myers Iune 13 1905 943,469 Schade Dec, 14 1909 1,7,89 ]enkins Oct. 20, 19Z 2,236,8Z6 Maynes Apr 1 1941 Z,478,948 shepler Aug( 16, 1949 Z,jS4 37 Morreale May zz, 191 2,640,674 Getlach Iune 2 19S3 FOREIGN PATENTS 8l,980 Germany July 3 18 z 1zz (...reat Britain f 

